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MegaWelt
@MegaWelt
October 2021
1
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Упростите выражение, пожалуйста...
1 + tg^2a - tg^2a * (cos^2a +1)
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ilajkaaail87
Решение:
1-cos²atg²a=1-(cos²asin²a)/cos²a=1-sin²a=cos²a.
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MegaWelt
Спасибо большое)
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Answers & Comments
1-cos²atg²a=1-(cos²asin²a)/cos²a=1-sin²a=cos²a.